Flip Google Chrome Linux x64 bot from GYP to GN.

tools/mb/mb_config.pyl

Index: tools/mb/mb_config.pyl
diff --git a/tools/mb/mb_config.pyl b/tools/mb/mb_config.pyl
index 98921fdc5cf7448312d4bfc5025a2840fdfa4c77..d8dbddf0a31fbd2d0404380320cfedf5b289b733 100644
--- a/tools/mb/mb_config.pyl
+++ b/tools/mb/mb_config.pyl
@@ -35,6 +35,7 @@
     'gn_debug_static_bot': ['gn', 'debug_static_bot'],
     'gn_linux_upload': ['gn_linux_upload', 'official', 'goma'],
     'gn_official_goma': ['gn', 'official', 'goma'],
+    'gn_official_goma_x86': ['gn', 'official', 'goma', 'x86'],
     'gn_release_bot': ['gn', 'release_bot'],
     'gn_release_bot_minimal_symbols': ['gn', 'release_bot_minimal_symbols'],
     'gn_release_bot_minimal_symbols_x86': ['gn', 'release_bot_minimal_symbols', 'x86'],
@@ -45,7 +46,6 @@
     'gyp_official': ['gyp', 'official'],
     'gyp_official_goma': ['gyp', 'official', 'goma'],
     'gyp_official_goma_chromeos': ['gyp', 'official', 'goma', 'chromeos'],
-    'gyp_official_goma_x86': ['gyp', 'official', 'goma', 'x86'],
     'gyp_official_goma_minimal_symbols': ['gyp', 'official', 'goma', 'minimal_symbols'],
     'gyp_official_goma_minimal_symbols_android': ['gyp', 'official', 'goma', 'minimal_symbols', 'android'],
     'gyp_official_goma_minimal_symbols_android_arm64': ['gyp', 'official', 'goma', 'minimal_symbols', 'android', 'arm64'],
@@ -322,7 +322,7 @@
     },
     'chromium.chrome': {
       'Google Chrome Win': 'gyp_official_goma_minimal_symbols_x86',
-      'Google Chrome Linux': 'gyp_official_goma_x86',
+      'Google Chrome Linux': 'gn_official_goma_x86',
       'Google Chrome Linux x64': 'gyp_official_goma',
       'Google Chrome Mac': 'gyp_official_goma',
       'Google Chrome ChromeOS': 'gyp_official_goma_chromeos',